OBJECT J, 49403

Orbit data source: Space-Track

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Recently launched and/or uncataloged satellites may have evolving metadata. Metadata may include but not limited to: Owner, Maufacturer, Bus, Motor, and Mission.

OBJECT J, 49403 is a satellite owned by Aoyama Gakuin (JP) in SSO that was launched on Tue, 09 Nov 2021 UTC via an EPSILON launch vehicle from the Kagoshima Space Center University Of Tokyo (KSCUT). Unknown objects in Earth's orbit typically refer to objects detected orbiting the Earth but have not yet been identified or cataloged. These objects could be anything from previously untracked satellites, spent rocket stages, debris from satellite collisions, or even natural meteoroids temporarily captured by Earth's gravity.

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<iframe src="https://www.satcat.com/sats-embedded/49403?theme=dark&initialShowStats=false" width="600" height="400" frameborder="0" title="Kayhan Space Satcat Satellite Viewer"></iframe>

Iframe URL

https://www.satcat.com/sats-embedded/49403?theme=dark&initialShowStats=false

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Identifier

49403, 2021-102J

Orbit

SSO

Last TLE update

14 hours ago

Origin

Aoyama Gakuin University (JP / JPN)

Manufacturer

Aoyama Gakuin

Mission

Non-operational Amateur Astronomy

Bus & Motor

CUBESAT 1U, Unknown motor

Mass

1 kg wet, 1 kg dry

Launch date (UTC)

2021-11-09 (4 years ago)

Launch vehicle

EPSILON

Launch site

Kagoshima Space Center University Of Tokyo (KSCUT)

Object type

Unknown

Shape & HBR

Box, 0.1 m

Radar Cross Section

0.015 m², Small (<0.1 m²)

Expand to show TLE details & history

TLE from 14 hours ago

0 OBJECT J
1 49403U 21102J   25202.09375076  .00018143  00000-0  47966-3 0  9996
2 49403  97.3639 255.0909 0009463 255.9206 104.0988 15.38425875204206

Epoch: 2025-07-21T02:15Z

TLE epoch observation values (Epoch: 2025-07-21T02:15:00.065Z)

Latitude

0°

Longitude

-77.76647°

Altitude

455.46 km

Speed

7.638 km/s

True Right ascension

17h 00m 21s

True Declination

0° 00' 00"

Sunlit

Object was in full shadow at epoch

Visualization orbit readout

Latitude

-4.48634°

Longitude

-76.60184°

Altitude

455.826 km

Speed

7.638 km/s

Apparent Right ascension

17h 09m 13s

Apparent Declination

-21° 27' 23"

Sunlit

Object is in full shadow

Visualization observer readout

Local Sidereal Time

05:15:03

Azimuth

4.282° NNE

Elevation

-71.499°

Doppler factor

Orbital elements

Apogee altitude

454.162 km

Perigee altitude

441.244 km

Semi-major axis

6,825.84 km

Eccentricity

0.00095

Inclination

97.3639°

RAAN

255.0909°

Arg. of periapsis

255.9206°

True anomaly

104.20394°

Mean anomaly

104.0988°

Eccentric anomaly

104.15137°

Mean motion

3.84866 °/min

Orbital period

93.54 mins

BSTAR

0.00047966

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Other satellites on launch #102 in the year 2021 (2021-11-09 UTC)

ASTERISC, 49395 (Decayed)

TEIKYOSAT-4 (OORURI), 49396

EPSILON R/B, 49405 (Decayed)

DRUMS TARGET-1, 55685 (Decayed)

DRUMS TARGET-2, 58954 (Decayed)

OBJECT J Visibility forecast

Observer location: undefined°, undefined°

Span	Click to sort rows by Start time (UTC) header in descending order	Start Az.	Max El. time (UTC)	Max El. Az.	Max El.	End time (UTC)	End Az.
5 mins	2025-07-21 16:51:47.574Z	347.902° N	2025-07-21 16:53:47.574Z	296.984° NW	31.248°	2025-07-21 16:56:47.574Z	219.888° SW
4 mins	2025-07-22 03:22:47.574Z	137.584° SSE	2025-07-22 03:23:47.574Z	105.969° ESE	36.479°	2025-07-22 03:26:47.574Z	1.814° NNE

Co-orbital & Co-planar RSOs

Thresholds — Semi-major Axis: ±100 km, RAAN: ±3°, Inclination: ±5°
TCA is derived from TLE conjunctions

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Authenticating...

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Check out OBJECT J, 49403 on other resources

View OBJECT J, 49403 on Heavens-Above

View OBJECT J, 49403 on Keep Track

View OBJECT J, 49403 on Celestrak

View OBJECT J, 49403 on Gunter's Space Page

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